American multinational investment bank and financial services corporation
Citigroup Inc. or Citi (stylized as citi) is an American multinational investment bank and financial services company based in New York City. The company was formed in 1998 by the merger of Citicorp, the bank holding company for Citibank, and Travelers; Travelers was spun off from the company in 2002. Citigroup is the third-largest banking institution in the United States by assets; alongside JPMorgan Chase, Bank of America, and Wells Fargo, it is one of the Big Four banking institutions of the United States.
https://en.wikipedia.org/wiki/Citigroup